How to add websocket client and server ?

I use old webman with custom start.php years ago from walkor #235

Now I use the latest 2.1.6

I follow the doc but Only got 1 port for websocket,

Basicly I want to send it to all browser broadcast and could send via GET in guzzle and postman

So how to do it ?
@walkor

Start with the webman 2.1.6 websocket documentation and the referenced custom start.php setup, then compare the single-port behavior with the requested client and server flow. Done should clearly define how browser broadcasts are sent and how a GET request from Guzzle or Postman triggers them.

Written by the indexing model from the issue text.